Hi all,
I am doing a piece of design coursework involving full wiring for a garage and attached offices. The premises has 3 sub DBs, one of which is located in the upstairs office. Since all the lights and power outlets are single phase here, should I just take one of the phases from the main supply to this DB, or supply it with all three phases and balance out the loads across all phases? My tutor it is advisable to only use one phase per floor in practice, because this would limit shock risk to 230V. Or would it be acceptable to use one same phase per area on each floor (i.e offices, kitchen, store rooms, etc).
Opinion would be much appreciated.
I am doing a piece of design coursework involving full wiring for a garage and attached offices. The premises has 3 sub DBs, one of which is located in the upstairs office. Since all the lights and power outlets are single phase here, should I just take one of the phases from the main supply to this DB, or supply it with all three phases and balance out the loads across all phases? My tutor it is advisable to only use one phase per floor in practice, because this would limit shock risk to 230V. Or would it be acceptable to use one same phase per area on each floor (i.e offices, kitchen, store rooms, etc).
Opinion would be much appreciated.